Exponential relation found between the STD of BIS data for each star and A(Li) [top panel], the STD of FWHM data for each star and A(Li) [middle panel], and the mean of Hα06 data for each star and A(Li) [bottom panel]. The data points are coloured according to the υ sin(i) of each star. The black lines are the lines of best fit for which the F-test statistics and p-values are listed in Table 3. In these plots we also show the Pearson correlation coefficients (p) between the activity proxies used and υ sin(i); all of them are very strong (>0.6).